Note on scaling arguments in the effective average action formalism
Note on scaling arguments in the effective average action formalism
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关于有效平均作用形式主义中的缩放参数的注意事项
DOI:
10.1103/physrevd.94.045001
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发表时间:
2016
影响因子:
5
通讯作者:
C. Pagani
中科院分区:
文献类型:
--
作者:
C. Pagani
The effective average action (EAA) is a scale dependent effective action where a scale $k$ is introduced via an infrared regulator. The $k-$dependence of the EAA is governed by an exact flow equation to which one associates a boundary condition at a scale $\mu$. We show that the $\mu-$dependence of the EAA is controlled by an equation fully analogous to the Callan-Symanzik equation which allows to define scaling quantities straightforwardly. Particular attention is paid to composite operators which are introduced along with new sources. We discuss some simple solutions to the flow equation for composite operators and comment their implications in the case of a local potential approximation.
影响因子:
5.4
作者:
Gliozzi F
通讯作者:
Gliozzi F